Help deciding on my first large snake

[rill90]

So I am currently in my last year of college and I want to get a snake when I move out (parents aren't fond of reptiles), but I am having troubles deciding which one to get so please help me make a decision. I am wanting a snake that has a "generally good disposition". And something different from ball pythons and corn snakes and such. The three I am thinking about right now are a woma python, dumerils boa, or a boa constrictor. I am open to other suggestions as well. I have kept snakes before making this decision so please try not to yell at me lol.